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1990 Nissan Micra Manual Transmission Reassembly Procedure - Page MT-23

Service manual page MT-23 with step-by-step transaxle reassembly illustrations for shift levers and mainshaft assembly.

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This document is a single page (MT-23) from a manual transmission (transaxle) service manual section titled "REASSEMBLY." It gives a seven-step illustrated procedure for reassembling the transmission onto the clutch housing. Steps include: (1) applying sealant to the welch plug and installing it on the clutch housing; (2) installing the striking lever and change shift lever; (3) installing the select shifter and retaining pin; (4) attaching the shift fork assembly to the mainshaft; (5) determining the thickness of shims to be used whenever the clutch housing, transmission case, mainshaft, differential case, or taper roller bearing is replaced (referring the reader to the "Adjustment" section); (6) wrapping cellophane tape around the input shaft splines to avoid damaging the oil seal; and (7) installing the mainshaft assembly with shift fork assembly and input shaft assembly onto the clutch housing as a single unit. Six line-art illustrations accompany the steps, referenced by figure codes SMT926, SMT927, SMT938, SMT950, SMT951, and SMT928. The page contains no torque values, part numbers, or model/year applicability statements. It was uploaded as part of a multi-page manual set attributed to a 1990 Nissan Micra.

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Frequently asked questions

How do you protect the transmission oil seal when installing the input shaft?
Wrap a tape (cellophane tape) around the splines of the input shaft to avoid damaging the oil seal (step 6, figure SMT951).
When do transmission shim thicknesses need to be determined?
Shim thickness must be determined when the clutch housing, transmission case, mainshaft, differential case, or taper roller bearing is replaced. The document refers to the "Adjustment" section for the procedure.
How are the mainshaft, shift fork, and input shaft installed?
The mainshaft assembly with the shift fork assembly and the input shaft assembly are installed onto the clutch housing together as a unit (step 7).
What is done with the welch plug during reassembly?
Sealant is applied to the welch plug and it is installed on the clutch housing (step 1, figure SMT926).

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